Get your drill bit ready. I recommend using a non-cordless drill. The first few bottles we tried we cracked I'm sure it was a 1:3 in favor of the busted bottles and we killed two batteries in half an hour. Yes.. TWO..
k your spot on your bottle with masking tape.

Make sure it's not too close to the bottle of the bottle as this could weaken the glass. Keep your drilling spot cool with water running from a watering can or hose. This will prevent heat fractures from the drilling.

Get your cord and push it through your hole and up through the head of the bottle.

Next notice how there are two wires in a cord.. one has a smooth side

and the otherside of the cord

and the other has a bumpy side.

Look at your light socket, notice how there are two screws.. one is brass.. the other one silver. Bumpy goes to brass.

Put the wires through the bottle of the socket and line up the cord to the correct screw. Loosen the screw and curve the wire around the screw and tighten.

Wrap the socket in electrical tape if it is too big to sit in the mouth of the bottle. Wrap it so you can push it in and it will stay put. Next wrap the tape tightly over starting with the first bit wrapping around the mouth of the bottle and any exposed metal bits up to the top of the socket.

Insert bulb.. some fringe if you please